National Bank Open: Sara Bejlek vs Iga Swiatek

Platform comparison

Market context

Sara Bejlek’s meeting with Iga Swiatek at the National Bank Open has been priced as a one-sided draw, with the crowd at 6% for Bejlek and bookmaker averages around 5% for the upset. That is broadly in line with the market’s treatment of their earlier 2026 meetings, where Swiatek has repeatedly been installed as a heavy favourite and Bejlek has been priced at a long shot. [1][2][8]

For traders, the key frame is that this kind of probability usually reflects more than ranking gap alone: Swiatek’s baseline level, recent form, and the fact that a top seed is expected to advance unless there is a physical issue or a scheduling disruption. The available previews for this match point to a short contest on paper, which is consistent with Swiatek’s strong pricing across the major books and the low-implied chance on Bejlek. [1][5][6]

The main catalysts are pre-match lineup and timing updates, plus any late information on injury, illness, or withdrawal, because a walkover or a delayed start can materially change how the market resolves. The match listing shows it as a second-round Centre Court fixture, and the settlement terms mean that if it is not played at all, or is pushed beyond the seven-day window without a winner, the market goes to 50-50 rather than either player. [1]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

Sports-specific comparison page for National Bank Open: Sara Bejlek vs Iga Swiatek. Polymarket's live quote (Polygon order book) plus platform attributes for the three reference venues. Sports markets reward liquidity — Polymarket and Betfair are materially deeper than Kalshi or Manifold.

Resolution & payout

Sports markets typically settle on official final-whistle plus league confirmation. Polymarket uses UMA Optimistic Oracle with a source URL per contract — usually official league data feeds or ESPN/Soccerway. Two-hour dispute window, then smart-contract payout in USDC.

FAQ

When do sports markets resolve?

Typically within hours of the official final whistle. Polymarket uses UMA Optimistic Oracle with source URLs pointing at official league data feeds — e.g. the Premier League for EPL markets, UEFA for Champions League, FIFA for World Cup.

Can I bet on individual matches?

Yes, Polymarket lists every major Premier League / Champions League / World Cup match as its own market. Liquidity varies — top matches like El Clásico or a semi-final often have six-figure pools, lower-league games closer to three-figure.

What are live sports odds on Polymarket?

Some top-tier matches stay open during play — you can trade the half-time probability in the 70th minute. Polymarket mid-prices update second-by-second; any frontend mirroring the order book shows the same movement.

Which sports markets are available?

Football (soccer) dominates — Champions League, World Cup, Premier League, La Liga, Bundesliga — followed by NFL, NBA, tennis Grand Slams, Formula 1, boxing/MMA. Resolution via official league source confirmation.

Can I import form data and lineups?

This page shows the live Polymarket quote as an implied probability. Form data and lineups must be researched separately via sports data providers (e.g. Soccerway, ESPN, FBref) — we surface the market probability, not the sport analysis.